<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert center title="添加商品信息" type="info" show-icon=""></el-alert>
      <el-steps
        align-center
        :active="activeIndex - 0"
        finish-status="success"
        space="200px"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          tab-position="left"
          :before-leave="beforeTabLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0" style="height=200px;">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item prop="goods_price" label="商品价格">
              <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item prop="goods_weight" label="商品重量">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item prop="goods_number" label="商品数量">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item prop="goods_cat" label="商品分类">
              <el-cascader
                :options="catelist"
                v-model="addForm.goods_cat"
                @change="handlechange"
                :props="cateprops"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyTableData"
              :label="item.attr_name"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="selectTableData">
                <el-checkbox
                  border
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :key="item.attr_id"
              v-for="item in onlyTableData"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :on-success="handlesuccess"
              list-type="picture"
              :headers="headersObj"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="AddBtn" @click="add">
              添加商品
            </el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
  </div>
</template>
<script>
import _ from 'lodash'
export default {
  created() {
    this.getcateList()
  },
  data() {
    return {
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: {
          required: true,
          message: '请输入商品名称！',
          trigger: 'blur'
        },
        goods_price: {
          required: true,
          message: '请输入商品价格！',
          trigger: 'blur'
        },
        goods_weight: {
          required: true,
          message: '请输入商品重量！',
          trigger: 'blur'
        },
        goods_number: {
          required: true,
          message: '请输入商品数量！',
          trigger: 'blur'
        },
        goods_cat: {
          required: true,
          message: '请输入商品数量！',
          trigger: 'blur'
        }
      },
      catelist: [],
      cateprops: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
        expandTrigger: 'hover'
      },
      //动态参数列表数据
      manyTableData: [],
      //静态参数列表数据
      onlyTableData: [],
      //多选框选中部分
      selectTableData: [],
      //上传图片的URL地址
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      //图片上传的headers
      headersObj: {
        Authorization: window.sessionStorage.getItem('token')
      }
    }
  },
  methods: {
    //获取分类列表
    async getcateList() {
      const { data: res } = await this.$http.get(`categories`)
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
        return
      }
      this.catelist = res.data
    },
    //级联选择器选中项变化
    handlechange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    //离开该tab的回调
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择第三级商品分类！')
        return false
      }
      return true
    },
    //点击tab
    async tabClick() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )
        if (res.meta.status !== 200) {
          this.$message.error('获取参数信息失败')
          return
        }
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })

        this.manyTableData = res.data
      }
      if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        if (res.meta.status !== 200) {
          this.$message.error('获取参数信息失败')
          return
        }

        this.onlyTableData = res.data
      }
    },
    //处理图片预览效果
    handlePreview() {},
    //移除图片
    handleRemove(file) {
      const path = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex(x => x.pic === path)
      this.addForm.pics.splice(i, 1)
    },
    //监听图片上传成功
    handlesuccess(response) {
      const picInfo = { pic: response.data.tmp_path }
      this.addForm.pics.push(picInfo)
    },
    //添加商品
    add() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          this.$message.error('请完善相关表单信息')
          return
        }
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')

        this.manyTableData.forEach(item => {
          const attrInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          this.addForm.attrs.push(attrInfo)
        })
        this.onlyTableData.forEach(item => {
          const attrInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(attrInfo)
        })
        form.attrs = this.addForm.attrs
        const { data: res } = await this.$http.post(`goods`, form)
        if (res.meta.status !== 201) {
          this.$message.error('添加商品失败')
          return
        }
        this.$message('添加商品成功！')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      return this.addForm.goods_cat[2]
    }
  }
}
</script>

<style scope>
.el-steps {
  margin-top: 40px;
  margin-left: auto;
  margin-right: auto;
}
.el-tabs {
  margin-top: 30px;
}
.el-input {
  width: 100%;
}
.el-checkbox {
  margin: 0 5px 0 0 !important;
}
.AddBtn {
  margin-top: 30px;
}
</style>
